Well, I have to go by reputable science. If the NHS, BHF, MHRA, etc, all state the same thing, and my own personal experience seems to point that way too, then it would be a bit silly to believe otherwise, wouldn't it?
I certainly don't think it's healthy, no addiction can be really. There are and will be consequences imo. But I'm convinced there's a difference between cigarettes and e-cigarettes. Crucially I don't think vapes cause cancer anywhere near on the scale of cigarettes, mostly because they don't produce tar.
Most anti vapers conflate smoking with vaping,,, and that's that I suppose.
In all honesty, I don't think I'm advocating vaping (let alone smoking) to any young people or non smokers. But it is a boon for smokers who can't quit as it is proven very much safer- put it this way the alternative is guaranteed bad health sooner or later.